What question did this study set out to answer?

To quantify the effect of standardised emergency care units on clinical outcomes in a low-resource health system.

March 13, 2026Open Access

Evaluating Emergency Care Systems in Kenya: A Difference-in-Differences Analysis of Clinical Outcomes

Key Points

To quantify the effect of standardised emergency care units on clinical outcomes in a low-resource health system.
Used a difference-in-differences model to analyze longitudinal data from hospitals.
Data included patient outcomes from both intervention and control hospitals.
Focused on mortality as the primary outcome measure with statistical inference based on cluster-robust standard errors.
ECU implementation led to a 4.8 percentage point reduction in all-cause 24-hour mortality.
The reduction was significant for non-trauma patients, but not for trauma cases.

Abstract

"background": "Emergency care systems in sub-Saharan Africa are underdeveloped, with limited evidence on the impact of formalising these services on patient outcomes. Robust evaluations of health system interventions in low-resource settings are methodologically challenging. ", "purpose and objectives": "This study aimed to quantify the causal effect of implementing standardised emergency care units (ECUs) on clinical outcomes in a low-resource health system, using a quasi-experimental design. ", "methodology": "We employed a difference-in-differences (DiD) model, analysing longitudinal patient-level data from intervention and control hospitals. The primary specification was Y{it = \ + \ (Treati \ Postt) + \ + \ +, where Y₈ₓ is the mortality outcome. Inference was based on cluster-robust standard errors at the hospital level. ", "findings": "ECU implementation was associated with a statistically significant 4. 8 percentage point reduction in all-cause 24-hour mortality (95% CI: -7. 1 to -2. 5). The reduction was concentrated among non-trauma cases, with no significant effect observed for trauma-related admissions. ", "conclusion": The establishment of formal emergency care units significantly improved early mortality outcomes for non-trauma patients, demonstrating the value of targeted systemic strengthening. ", "recommendations": "Health policy should prioritise investment in standardised emergency care systems, with initial focus on medical (non-trauma) pathways. Future scale-up should be accompanied by embedded longitudinal evaluation. ", "key words": "Emergency medical services, health systems evaluation, quasi-experimental design, sub-Saharan Africa, clinical outcomes, health policy", "contribution statement": "This study provides the first application of a difference-in-differences framework to evaluate a national emergency care system rollout in Africa, generating causal evidence for health system planning. " } ``` Background Emergency care systems in sub-Saharan Africa are underdeveloped, with limited evidence on the impact of formal

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